Considerate literally comes from considering (aka thinking of other people when making decisions), if you forget to take other people into account when making decisions, you’re being inconsiderate.

It’s not complicated.

Tbf, incest is quite often the result of grooming, which brings us back to the consent issue.

Do you feel the same about top down 2d? (Factorio, Stardew Valley, etc.)?

If you think about it, sidescrollers are just top down with a weird gravity.